Standardize usage of virtual/override/final in content/browser/

content/browser/ppapi_plugin_process_host.h

Index: content/browser/ppapi_plugin_process_host.h
diff --git a/content/browser/ppapi_plugin_process_host.h b/content/browser/ppapi_plugin_process_host.h
index ff58c3085533884c882388f2285d6fa720076d2f..3f90d3025dc741653a74a4ca8e0290500fd4bf0d 100644
--- a/content/browser/ppapi_plugin_process_host.h
+++ b/content/browser/ppapi_plugin_process_host.h
@@ -60,15 +60,15 @@ class PpapiPluginProcessHost : public BrowserChildProcessHostDelegate,
     virtual ResourceContext* GetResourceContext() = 0;
 
    protected:
-    virtual ~PluginClient() {}
+    ~PluginClient() override {}
   };
 
   class BrokerClient : public Client {
    protected:
-    virtual ~BrokerClient() {}
+    ~BrokerClient() override {}
   };
 
-  virtual ~PpapiPluginProcessHost();
+  ~PpapiPluginProcessHost() override;
 
   static PpapiPluginProcessHost* CreatePluginHost(
       const PepperPluginInfo& info,
@@ -96,7 +96,7 @@ class PpapiPluginProcessHost : public BrowserChildProcessHostDelegate,
                          std::vector<PpapiPluginProcessHost*>* hosts);
 
   // IPC::Sender implementation:
-  virtual bool Send(IPC::Message* message) override;
+  bool Send(IPC::Message* message) override;
 
   // Opens a new channel to the plugin. The client will be notified when the
   // channel is ready or if there's an error.
@@ -126,12 +126,12 @@ class PpapiPluginProcessHost : public BrowserChildProcessHostDelegate,
 
   void RequestPluginChannel(Client* client);
 
-  virtual void OnProcessLaunched() override;
+  void OnProcessLaunched() override;
 
-  virtual void OnProcessCrashed(int exit_code) override;
-  virtual bool OnMessageReceived(const IPC::Message& msg) override;
-  virtual void OnChannelConnected(int32 peer_pid) override;
-  virtual void OnChannelError() override;
+  void OnProcessCrashed(int exit_code) override;
+  bool OnMessageReceived(const IPC::Message& msg) override;
+  void OnChannelConnected(int32 peer_pid) override;
+  void OnChannelError() override;
 
   void CancelRequests();